July 28, 2012

The three-axis HRG gyro unit (НППМ 550) developed by Medicon as scientific equipment of spacecraft “Yubileiny-2” is placed into orbit…..

An HRG is an angular velocity measuring device, which operational principle is based on the property of a standing wave being generated inside a hemispherical quartz resonator. The device provides the definition of three angular velocity projections at axis connected to the device coordinate system. 
The application of an HRG includes its usage as a sensitive element in orientation systems as well as stabilization of spacecrafts.